Ladder bumper



FIG. 1 is a perspective view of a ladder bumper showing my new design;

FIG. 2 is a right side elevational view, the left side being identical thereto;

FIG. 3 is a front elevational view, the rear being identical thereto;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for ladder bumper, as shown and described. 